The current trend of blockchain is very high, couple with it's ability to execute millions transactions within seconds, few transactions cost and no third party is require or paper signing. All transactions recorded and kept open, taking alway cross border and languages barrier, excellent in e commences. So many features to change the world. My emphasis is can blockchain has the capacity to replace bank?
Blockchain is a technology, and cryptocurrency is a product of this technology. Neither the blockchain nor the cryptocurrency as a whole can replace the banking system. The banking system is not only a transaction. Banks perform various useful functions, especially for the state. In fact, now banks are part of the state. Cryptocurrency simply by its nature is not able to perform the functions of banks.